[PATCH 6/7] thermal: rockchip: Support RK3588 SoC in the thermal driver

Sebastian Reichel
2022-10-31T17:51:40Z

From: Finley Xiao <finley.xiao@rock-chips.com>

The RK3588 SoC has seven temperature sensor ADC channels:

- Chip Center
- CPU Cluster 1 (Dual A76 "Big" Cores)
- CPU Cluster 2 (Dual A76 "Big" Cores)
- CPU Cluster 0 (Quad A55 "Little" Cores)
- Power Domain Center
- Graphics Processing Unit
- Neural Processing Unit

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
[rebase, squash fixes]
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/thermal/rockchip_thermal.c | 177 +++++++++++++++++++++++++++++
1 file changed, 177 insertions(+)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index c9d04b58a1e5..48e40c3b3de6 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -165,29 +165,49 @@ struct rockchip_thermal_data {
#define TSADCV2_AUTO_CON 0x04
#define TSADCV2_INT_EN 0x08
#define TSADCV2_INT_PD 0x0c
+#define TSADCV3_AUTO_SRC_CON 0x0c
+#define TSADCV3_HT_INT_EN 0x14
+#define TSADCV3_HSHUT_GPIO_INT_EN 0x18
+#define TSADCV3_HSHUT_CRU_INT_EN 0x1c
+#define TSADCV3_INT_PD 0x24
+#define TSADCV3_HSHUT_PD 0x28
#define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04)
#define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04)
#define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04)
+#define TSADCV3_DATA(chn) (0x2c + (chn) * 0x04)
+#define TSADCV3_COMP_INT(chn) (0x6c + (chn) * 0x04)
+#define TSADCV3_COMP_SHUT(chn) (0x10c + (chn) * 0x04)
#define TSADCV2_HIGHT_INT_DEBOUNCE 0x60
#define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64
+#define TSADCV3_HIGHT_INT_DEBOUNCE 0x14c
+#define TSADCV3_HIGHT_TSHUT_DEBOUNCE 0x150
#define TSADCV2_AUTO_PERIOD 0x68
#define TSADCV2_AUTO_PERIOD_HT 0x6c
+#define TSADCV3_AUTO_PERIOD 0x154
+#define TSADCV3_AUTO_PERIOD_HT 0x158

#define TSADCV2_AUTO_EN BIT(0)
+#define TSADCV2_AUTO_EN_MASK BIT(16)
#define TSADCV2_AUTO_SRC_EN(chn) BIT(4 + (chn))
+#define TSADCV3_AUTO_SRC_EN(chn) BIT(chn)
+#define TSADCV3_AUTO_SRC_EN_MASK(chn) BIT(16 + chn)
#define TSADCV2_AUTO_TSHUT_POLARITY_HIGH BIT(8)
+#define TSADCV2_AUTO_TSHUT_POLARITY_MASK BIT(24)

#define TSADCV3_AUTO_Q_SEL_EN BIT(1)

#define TSADCV2_INT_SRC_EN(chn) BIT(chn)
+#define TSADCV2_INT_SRC_EN_MASK(chn) BIT(16 + (chn))
#define TSADCV2_SHUT_2GPIO_SRC_EN(chn) BIT(4 + (chn))
#define TSADCV2_SHUT_2CRU_SRC_EN(chn) BIT(8 + (chn))

#define TSADCV2_INT_PD_CLEAR_MASK ~BIT(8)
#define TSADCV3_INT_PD_CLEAR_MASK ~BIT(16)
+#define TSADCV4_INT_PD_CLEAR_MASK 0xffffffff

#define TSADCV2_DATA_MASK 0xfff
#define TSADCV3_DATA_MASK 0x3ff
+#define TSADCV4_DATA_MASK 0x1ff

#define TSADCV2_HIGHT_INT_DEBOUNCE_COUNT 4
#define TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT 4
@@ -198,6 +218,8 @@ struct rockchip_thermal_data {

#define TSADCV5_AUTO_PERIOD_TIME 1622 /* 2.5ms */
#define TSADCV5_AUTO_PERIOD_HT_TIME 1622 /* 2.5ms */
+#define TSADCV6_AUTO_PERIOD_TIME 5000 /* 2.5ms */
+#define TSADCV6_AUTO_PERIOD_HT_TIME 5000 /* 2.5ms */

#define TSADCV2_USER_INTER_PD_SOC 0x340 /* 13 clocks */
#define TSADCV5_USER_INTER_PD_SOC 0xfc0 /* 97us, at least 90us */
@@ -214,6 +236,12 @@ struct rockchip_thermal_data {
#define RK3568_GRF_TSADC_ANA_REG2 (0x10001 << 2)
#define RK3568_GRF_TSADC_TSEN (0x10001 << 8)

+#define RK3588_GRF0_TSADC_CON 0x0100
+
+#define RK3588_GRF0_TSADC_TRM (0xff0077 << 0)
+#define RK3588_GRF0_TSADC_SHUT_2CRU (0x30003 << 10)
+#define RK3588_GRF0_TSADC_SHUT_2GPIO (0x70007 << 12)
+
#define GRF_SARADC_TESTBIT_ON (0x10001 << 2)
#define GRF_TSADC_TESTBIT_H_ON (0x10001 << 2)
#define GRF_TSADC_VCM_EN_L (0x10001 << 7)
@@ -508,6 +536,15 @@ static const struct tsadc_table rk3568_code_table[] = {
{TSADCV2_DATA_MASK, 125000},
};

+static const struct tsadc_table rk3588_code_table[] = {
+ {0, -40000},
+ {215, -40000},
+ {285, 25000},
+ {350, 85000},
+ {395, 125000},
+ {TSADCV4_DATA_MASK, 125000},
+};
+
static u32 rk_tsadcv2_temp_to_code(const struct chip_tsadc_table *table,
int temp)
{
@@ -778,6 +815,25 @@ static void rk_tsadcv7_initialize(struct regmap *grf, void __iomem *regs,
}
}

+static void rk_tsadcv8_initialize(struct regmap *grf, void __iomem *regs,
+ enum tshut_polarity tshut_polarity)
+{
+ writel_relaxed(TSADCV6_AUTO_PERIOD_TIME, regs + TSADCV3_AUTO_PERIOD);
+ writel_relaxed(TSADCV6_AUTO_PERIOD_HT_TIME,
+ regs + TSADCV3_AUTO_PERIOD_HT);
+ writel_relaxed(TSADCV2_HIGHT_INT_DEBOUNCE_COUNT,
+ regs + TSADCV3_HIGHT_INT_DEBOUNCE);
+ writel_relaxed(TSADCV2_HIGHT_TSHUT_DEBOUNCE_COUNT,
+ regs + TSADCV3_HIGHT_TSHUT_DEBOUNCE);
+ if (tshut_polarity == TSHUT_HIGH_ACTIVE)
+ writel_relaxed(TSADCV2_AUTO_TSHUT_POLARITY_HIGH |
+ TSADCV2_AUTO_TSHUT_POLARITY_MASK,
+ regs + TSADCV2_AUTO_CON);
+ else
+ writel_relaxed(TSADCV2_AUTO_TSHUT_POLARITY_MASK,
+ regs + TSADCV2_AUTO_CON);
+}
+
static void rk_tsadcv2_irq_ack(void __iomem *regs)
{
u32 val;
@@ -794,6 +850,17 @@ static void rk_tsadcv3_irq_ack(void __iomem *regs)
writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK, regs + TSADCV2_INT_PD);
}

+static void rk_tsadcv4_irq_ack(void __iomem *regs)
+{
+ u32 val;
+
+ val = readl_relaxed(regs + TSADCV3_INT_PD);
+ writel_relaxed(val & TSADCV4_INT_PD_CLEAR_MASK, regs + TSADCV3_INT_PD);
+ val = readl_relaxed(regs + TSADCV3_HSHUT_PD);
+ writel_relaxed(val & TSADCV3_INT_PD_CLEAR_MASK,
+ regs + TSADCV3_HSHUT_PD);
+}
+
static void rk_tsadcv2_control(void __iomem *regs, bool enable)
{
u32 val;
@@ -829,6 +896,18 @@ static void rk_tsadcv3_control(void __iomem *regs, bool enable)
writel_relaxed(val, regs + TSADCV2_AUTO_CON);
}

+static void rk_tsadcv4_control(void __iomem *regs, bool enable)
+{
+ u32 val;
+
+ if (enable)
+ val = TSADCV2_AUTO_EN | TSADCV2_AUTO_EN_MASK;
+ else
+ val = TSADCV2_AUTO_EN_MASK;
+
+ writel_relaxed(val, regs + TSADCV2_AUTO_CON);
+}
+
static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int *temp)
{
@@ -839,6 +918,16 @@ static int rk_tsadcv2_get_temp(const struct chip_tsadc_table *table,
return rk_tsadcv2_code_to_temp(table, val, temp);
}

+static int rk_tsadcv4_get_temp(const struct chip_tsadc_table *table,
+ int chn, void __iomem *regs, int *temp)
+{
+ u32 val;
+
+ val = readl_relaxed(regs + TSADCV3_DATA(chn));
+
+ return rk_tsadcv2_code_to_temp(table, val, temp);
+}
+
static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int temp)
{
@@ -873,6 +962,33 @@ static int rk_tsadcv2_alarm_temp(const struct chip_tsadc_table *table,
return 0;
}

+static int rk_tsadcv3_alarm_temp(const struct chip_tsadc_table *table,
+ int chn, void __iomem *regs, int temp)
+{
+ u32 alarm_value;
+
+ /*
+ * In some cases, some sensors didn't need the trip points, the
+ * set_trips will pass {-INT_MAX, INT_MAX} to trigger tsadc alarm
+ * in the end, ignore this case and disable the high temperature
+ * interrupt.
+ */
+ if (temp == INT_MAX) {
+ writel_relaxed(TSADCV2_INT_SRC_EN_MASK(chn),
+ regs + TSADCV3_HT_INT_EN);
+ return 0;
+ }
+ /* Make sure the value is valid */
+ alarm_value = rk_tsadcv2_temp_to_code(table, temp);
+ if (alarm_value == table->data_mask)
+ return -ERANGE;
+ writel_relaxed(alarm_value & table->data_mask,
+ regs + TSADCV3_COMP_INT(chn));
+ writel_relaxed(TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn),
+ regs + TSADCV3_HT_INT_EN);
+ return 0;
+}
+
static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
int chn, void __iomem *regs, int temp)
{
@@ -892,6 +1008,25 @@ static int rk_tsadcv2_tshut_temp(const struct chip_tsadc_table *table,
return 0;
}

+static int rk_tsadcv3_tshut_temp(const struct chip_tsadc_table *table,
+ int chn, void __iomem *regs, int temp)
+{
+ u32 tshut_value;
+
+ /* Make sure the value is valid */
+ tshut_value = rk_tsadcv2_temp_to_code(table, temp);
+ if (tshut_value == table->data_mask)
+ return -ERANGE;
+
+ writel_relaxed(tshut_value, regs + TSADCV3_COMP_SHUT(chn));
+
+ /* TSHUT will be valid */
+ writel_relaxed(TSADCV3_AUTO_SRC_EN(chn) | TSADCV3_AUTO_SRC_EN_MASK(chn),
+ regs + TSADCV3_AUTO_SRC_CON);
+
+ return 0;
+}
+
static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
enum tshut_mode mode)
{
@@ -909,6 +1044,22 @@ static void rk_tsadcv2_tshut_mode(int chn, void __iomem *regs,
writel_relaxed(val, regs + TSADCV2_INT_EN);
}

+static void rk_tsadcv3_tshut_mode(int chn, void __iomem *regs,
+ enum tshut_mode mode)
+{
+ u32 val_gpio, val_cru;
+
+ if (mode == TSHUT_MODE_GPIO) {
+ val_gpio = TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn);
+ val_cru = TSADCV2_INT_SRC_EN_MASK(chn);
+ } else {
+ val_cru = TSADCV2_INT_SRC_EN(chn) | TSADCV2_INT_SRC_EN_MASK(chn);
+ val_gpio = TSADCV2_INT_SRC_EN_MASK(chn);
+ }
+ writel_relaxed(val_gpio, regs + TSADCV3_HSHUT_GPIO_INT_EN);
+ writel_relaxed(val_cru, regs + TSADCV3_HSHUT_CRU_INT_EN);
+}
+
static const struct rockchip_tsadc_chip px30_tsadc_data = {
/* cpu, gpu */
.chn_offset = 0,
@@ -1132,6 +1283,28 @@ static const struct rockchip_tsadc_chip rk3568_tsadc_data = {
},
};

+static const struct rockchip_tsadc_chip rk3588_tsadc_data = {
+ /* top, big_core0, big_core1, little_core, center, gpu, npu */
+ .chn_offset = 0,
+ .chn_num = 7, /* seven channels for tsadc */
+ .tshut_mode = TSHUT_MODE_GPIO, /* default TSHUT via GPIO give PMIC */
+ .tshut_polarity = TSHUT_LOW_ACTIVE, /* default TSHUT LOW ACTIVE */
+ .tshut_temp = 95000,
+ .initialize = rk_tsadcv8_initialize,
+ .irq_ack = rk_tsadcv4_irq_ack,
+ .control = rk_tsadcv4_control,
+ .get_temp = rk_tsadcv4_get_temp,
+ .set_alarm_temp = rk_tsadcv3_alarm_temp,
+ .set_tshut_temp = rk_tsadcv3_tshut_temp,
+ .set_tshut_mode = rk_tsadcv3_tshut_mode,
+ .table = {
+ .id = rk3588_code_table,
+ .length = ARRAY_SIZE(rk3588_code_table),
+ .data_mask = TSADCV4_DATA_MASK,
+ .mode = ADC_INCREMENT,
+ },
+};
+
static const struct of_device_id of_rockchip_thermal_match[] = {
{ .compatible = "rockchip,px30-tsadc",
.data = (void *)&px30_tsadc_data,
@@ -1168,6 +1341,10 @@ static const struct of_device_id of_rockchip_thermal_match[] = {
.compatible = "rockchip,rk3568-tsadc",
.data = (void *)&rk3568_tsadc_data,
},
+ {
+ .compatible = "rockchip,rk3588-tsadc",
+ .data = (void *)&rk3588_tsadc_data,
+ },
{ /* end */ },
};
MODULE_DEVICE_TABLE(of, of_rockchip_thermal_match);